ArrayObject::natcasesort
(PHP 5 >= 5.2.0, PHP 7, PHP 8)
ArrayObject::natcasesort — Sort an array using a case insensitive "natural order" algorithm
说明
This method is a case insensitive version of ArrayObject::natsort.
This method implements a sort algorithm that orders alphanumeric strings in the way a human being would while maintaining key/value associations. This is described as a "natural ordering".
注意:
如果两个成员完全相同,那么它们将保持原来的顺序。 在 PHP 8.0.0 之前,它们在排序数组中的相对顺序是未定义的。
参数
此函数没有参数。
返回值
没有返回值。
示例
示例 #1 ArrayObject::natcasesort() example
<?php
$array = array('IMG0.png', 'img12.png', 'img10.png', 'img2.png', 'img1.png', 'IMG3.png');
$arr1 = new ArrayObject($array);
$arr2 = clone $arr1;
$arr1->asort();
echo "Standard sorting\n";
var_dump($arr1);
$arr2->natcasesort();
echo "\nNatural order sorting (case-insensitive)\n";
var_dump($arr2);
?>
以上示例会输出:
Standard sorting object(ArrayObject)#1 (1) { ["storage":"ArrayObject":private]=> array(6) { [0]=> string(8) "IMG0.png" [5]=> string(8) "IMG3.png" [4]=> string(8) "img1.png" [2]=> string(9) "img10.png" [1]=> string(9) "img12.png" [3]=> string(8) "img2.png" } } Natural order sorting (case-insensitive) object(ArrayObject)#2 (1) { ["storage":"ArrayObject":private]=> array(6) { [0]=> string(8) "IMG0.png" [4]=> string(8) "img1.png" [3]=> string(8) "img2.png" [5]=> string(8) "IMG3.png" [2]=> string(9) "img10.png" [1]=> string(9) "img12.png" } }
For more information see: Martin Pool's » Natural Order String Comparison page.
参见
- ArrayObject::asort() - Sort the entries by value
- ArrayObject::ksort() - Sort the entries by key
- ArrayObject::natsort() - Sort entries using a "natural order" algorithm
- ArrayObject::uasort() - Sort the entries with a user-defined comparison function and maintain key association
- ArrayObject::uksort() - Sort the entries by keys using a user-defined comparison function
- natcasesort() - 用“自然排序”算法对数组进行不区分大小写字母的排序
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备份地址:http://www.lvesu.com/blog/php/arrayobject.natcasesort.php